Hacking Hardware Picofly - a HWFLY switch modchip

[rehius]

Wondering if v2.6 somehow remains on sysnand

unlocked picofly does not rewrite the preloader (unless it's completely broken), people asked for that to be able to use sdloader from the hwfly, for example.

 

[jkyoho]

unlocked picofly does not rewrite the preloader (unless it's completely broken), people asked for that to be able to use sdloader from the hwfly, for example.

I get this part. Just curious how 2 different boards shared same preloader screen since they have different version as well

 

[Arakon]

Speaking of.. what's the advantage of using the hwfly sdloader?

 

[jkyoho]

Speaking of.. what's the advantage of using the hwfly sdloader?

Update picofly fw without usb port solder back I guess

 

[rehius]

I get this part. Just curious how 2 different boards shared same preloader screen since they have different version as well

preloader is stored into BOOT0, it stays there until chip reset, OFW update or eMMC replacement.
v2.6 placed it there, v2.5 did not rewrite it since no rewrite triggers were detected

 

[Arakon]

Update picofly fw without usb port solder back I guess

That's what 2.6 already does by itself.

 

[juanvlc]

So if we have the previous version + unlock.uf2 applied, just drag and drop v2.6 in order to update?
Thanks a lot

 

[SQc04]

Great work!
I'm having the idea to try to reball the eMMC as well, didn't get the courage yet
Did you have trouble while detaching the chip from the stencil after reflowing the solder paste? And what were the temperatures used in all the steps?
Thanks!

The temperature of the motherboard during reflow soldering is about 250°C

 

[vagenam]

So if we have the previous version + unlock.uf2 applied, just drag and drop v2.6 in order to update?
Thanks a lot

bump

 

[rehius]

bump

yes

 

[RexSonic]

You're gonna need:
- Of course some wire, usually 0.2 enameled wire is the suggested type
- Thermal paste to replace the one you'll have to take off
- Kapton tape to keep the RP2040 in place and avoid shorts

I think you already have a soldering iron and solder

Any specific type of Thermal paste ?

 

[minik1971]

if at peak you already have version 2.5 the unlocking and the toshiba one to update I just have to drag version 2.6?

 

[rehius]

if at peak you already have version 2.5 the unlocking and the toshiba one to update I just have to drag version 2.6?

yes

 

[vagenam]

yes

after flashing with 2.6 with 2.5+unlock already flashed before rp2040 zero didn't flash the led in any way. Is that normal?

 

[realtimesave]

Thanks SQc04 I’ll see if somehow I can get a glob of solder onto that point. Man rst is so tiny.

 

[vittorio]

on a lite with volume plus and minus ofw does not boot @rehius

 

[rehius]

after flashing with 2.6 with 2.5+unlock already flashed before rp2040 zero didn't flash the led in any way. Is that normal?

no. wait for the fixed version, or bridge RGB jumper (and use it with inversed colours)

Post automatically merged: Apr 5, 2023

on a quarrel with volume plus and minus ofw does not part @rehius

was it working before 2.6? if not, boot Full Stock and apply official update.

 

[vittorio]

no. wait for the fixed version, or bridge RGB jumper (and use it with inversed colours)

Post automatically merged: Apr 5, 2023

was it working before 2.6? if not, boot Full Stock and apply official update.

full stock from hekate and update? even if the latest version?

 

[vagenam]

no. wait for the fixed version, or bridge RGB jumper (and use it with inversed colours)

Post automatically merged: Apr 5, 2023

was it working before 2.6? if not, boot Full Stock and apply official update.

i'll just wait for the fixed version then, I'm still waiting for my soldering iron so no soldering for a couple of days for me anyway. Thanks for the good work you are putting in

 

[RiotRetroGaming]

Thanks, once you said you 'didn't have any internal pics' though, I 'just did it'. Nearly exactly the same way as you describe here, I just went too far w\ an alternative idea because I didn't double check what you did. I'll upload pics of my mad project(s) soon.

Cool, will have a browse, 15 more pages have appeared since I've been on here.

I have a V1 Switch on eBay, I've been clever and it's not been de-listed